Friday, January 16, 2009

US report on sea level rise paints an alarming picture

EPA: The U.S. Environmental Protection Agency, in collaboration with other agencies, has released a report that discusses the impacts of sea level rise on the coast, coastal communities, and the habitats and species that depend on them. The report, Coastal Sensitivity to Sea-Level Rise: A Focus on the Mid-Atlantic Region, examines multiple opportunities for governments and coastal communities to plan for and adapt to rising sea levels.

Sea-level rise can affect coastal communities and habitats in a variety of different ways, including submerging low-lying lands, eroding beaches, converting wetlands to open water, intensifying coastal flooding, and increasing the salinity of estuaries and freshwater aquifers. It is caused by a number of natural and human-induced factors and can vary by region. Some impacts of sea-level rise can already be observed along the U.S. coast. Among the report highlights:

Rising water levels are already an important factor in submerging low-lying lands, eroding beaches, converting wetlands to open water, and exacerbating coastal flooding. All of these effects will be increased if the rate of sea-level rise accelerates in the future.

Most coastal wetlands in the mid-Atlantic would be lost if sea level rises one meter in the next century. Even a 50-cm rise would threaten most wetlands along the Eastern Shore of Chesapeake Bay.

Possible responses to sea level rise include seawalls, bulkheads, and other shoreline armoring; elevating buildings and land surfaces (including beaches and wetlands); and allowing shorelines to change and moving structures out of harm’s way. Those three approaches have very different environmental and social impacts.

Preparing now can reduce the eventual environmental and economic impacts of sea level rise.

Some governmental and nongovernmental organizations are already starting to prepare for sea level rise.

June 2009 – At the studios of Cleanskies TV, I was interviewed about the costs of climate change, and discussed adaptation efforts underway in the US and around the world.

May 2009 – I helped draft the scenarios for Rising Waters, a multistakeholder scenarios effort focused on climate change adaptation in the Hudson Valley. The final report is now completed and available here.

May 2008 – I reviewed two books on climate and energy in the New Leader magazine: James Gustave Speth's The Bridge at the Edge of the World: Capitalism, the Environment and Crossing from Crisis to Sustainability, plus Robert Bryce's Gusher of Lies: The Dangerous Delusions of Energy Independence.

January 2008 – A very local paper covers a very global issue.... The Litchfield County Times in northwestern Connectictut ran an article in January 2008 about Carbon-Based.

Now available: Climate Change Adaptation in 2011

A selection of my writings from 2011, plus some of my posts, as well as links... all focusing on the risks of climate change